Hi,
I found a bunch of open source network stuff for Windows, that might be interesting, or maybe not, don't know. Just wanted to share the links...
NDIS: http://en.pudn.com/downloads93/sourcecode/windows/vxd/detail365961_en.html
RasDial: http://www.pudn.com/downloads37/sourcecode/windows/network/detail122225.html
MtPPPoE: http://en.pudn.com/downloads63/sourcecode/windows/vxd/detail221132_en.html
PPPoE Client: http://en.pudn.com/downloads30/sourcecode/windows/network/detail99195_en.htm...
IPSec: http://en.pudn.com/downloads8/sourcecode/windows/detail23580_en.html
rtl8139: http://en.pudn.com/downloads61/sourcecode/windows/vxd/detail210433_en.html
rtl8029: http://en.pudn.com/downloads78/sourcecode/windows/vxd/detail299947_en.html
Intel EtheExpress: http://en.pudn.com/downloads92/sourcecode/windows/vxd/detail357425_en.html
Irda: http://en.pudn.com/downloads30/sourcecode/windows/vxd/detail99038_en.html